:bug: Check MachineConfig spec for full equality with Rke2CPSpec

[Danil-Grigorev]

What this PR does / why we need it:

We need to ensure that any change of RKE2ConfigTemplate is causing CP machines re-rollout.

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged): Fixes #307

Special notes for your reviewer:

Checklist:

• [ ] squashed commits into logical changes
• [ ] includes documentation
• [ ] adds unit tests
• [ ] adds or updates e2e tests